Improvement in machines for slitting, beveling, and bending metal-tube skelps



selecties r. M. russes, or PHILADELPHIA, rENNsYLVAnHA.lV

IMPROVEMENT IN MACHINES FR SLITTING, BEVELING, AND BENDING METAL-TUBE SKELPS.

Specilicntion forming part of Letters Patient No. E ihfe (lated Januar if?A 157i.

LSTEPHEN P.` M. TAsKER, of the city of lhilzulelphiii- Iatnd State ot' Pennsylvania,have invented certain improvements in S1itting,` Beveling, und Bending Metal-Tube Skelps, ot' which the following is u. specification z My invention consists ot' u machine which slits, hevels, und bends the skelp et one operation in making the lup'u-'eldedjoint tubes. NVhen melting such tubes I employmilled-heed cutters ofthe proper form to give the requisite bevel to the edges ofthe skelps, as hereinafter described; but in making butt-joint tubes I employ plain cutters', which produce square edges.

The sheets ure passed through suitable guides to the ieedrollers, which cete-l1 their front ends midpass them through the bend ing-rolls.

` "he first pair ot' rolls bends the shelps with their edge portions parallel to each other, the middle portion `being seinicirenler, es in the manner of other bendingvmachines.

After the skelp passes throughy these rolls it is caught by e'seeond pair of rolls, one of which has beveled le11ges,which iep over the other rolls, so es to forni guides for the skelps, tinus dispensing Wit-l1 the ordinsry stetionsry guides. This roll hes, et the inner portion of one of the flanges, e curve of one-fourth of e circle, for continuing the bending, so that es the skelp passes through. the rolls only onefonrth remains to be bent by another opereu ,tion thcreb;r diminishing the chance ci' bucle- 7 n in ling. This roll has en stimuler tongue et the termination ot seid curve, against which the bent edge of the skelp rests, theinibent edge passing vinto e groove formed by the opposite side of the tongue .and the contiguous bevel 11u-nge of the roll.

The mmidrelwhieh regulates the inner form and size of the skelp is greeted ont to admit of the passage of the tongue.

The finishing operation 'inV the bending is performed with two groovetl ro1is,in the ordinary manner. Une of these rolls hes bevel guide-flanges, as in the ense of the second ypair above described.

In the accompanyingdrawing, which makes a, peri; of this speciticaton, ligur'e i is :t pien view of the improved machine, Fig. Zis e longitudinal section nt the line .r ci' Fig.. 1.

Fig. 3 is u, side view ofthe cutter H. Figs. et, 5, and G are, respectively, portions vot' the` edges ofthe three pairs oi'rclis K K', .L L', 0 0', :unl the skelps as formed by euch pair, on an enlarged seele. Fie', 7 is an end view of :i plete-shelf) for forming ai lap-Weldedjoiut tube Fig. 8 is a, like View of iiskelp for forming ai butt-joint tube. Fig. 9 represents the form of the skelp produced by the rolls li K; Fig. l0, the forni produced by' the ro`is L L `Figl 1l, the form of the skelp when passed through the rolls O 0. Fig. 12 ie}-i'esenis the finished form of n b uttzioint skeip after pas :ing through the seme relis.

Eike letters in all the figures indicate the' seme parts.

A is the bed-plete, und B B the housings. To the letter the several parts of machine are connected.

Ojn the horizontal. plete G, the ends of which ere connected with the projections a on the front ends nf the housings B B, there is aA mouth, l)v through which the metal sheet pti-sees into the machine.

At the sides et' the :morth D there aire een`- sheet into the pril-per Widths for tie skelps and lieveling the edges et one epe'retiou.

'iS-lie iniddie heed, J, hes n. doubie-irclined edge, t b, to forte the bevels en the con igu'ous edges of the two skeins, While the onzer heads, J J', have e single bevel, if, es represented in the drawing, i *forni ,the outer edges of the skclps. The cntterheed is shownV detached in Fig. 3,

ll here represented cutters for slitting end bending two skeips out of e sheet merely by Way of illustration, lin psctiee, form. :t greater number, which vnries, according to the size of the sheet and width of the s'.';elps. The bendingrolls, also, of course, instead. et* being duplex merely on each shaft, es repre sented, correspond in number to the number ci the skelps. In. making buttfjont tubesik use merely plein cutters.

The shaft l is provided with the double rolls K. K, and the shaft l' withthe double rolls K' K', for brin ging the skelps as they pass 'through them into the form represented in Figs. 4 and 9.

The shaft 2 is provided with double rolls L L, which project from the hub M, and have in th'eir pcripZieri-es circular grooves d d, in which the heut portzon of the skein rests as the latter passes from the rolls KK.

The upper double rolls, L' L', have annular flanges r, wlich oi crlap the rolls L L, as shown rflearly iii Fig. 5.

At the base of l'if the flanges of .each roll is a curve, f, which. extends to the aagn'iular Vtongue g, Vagainst which vthe edge of the slrelp rests as it is turned by the iian ge e, and brought into the curved position representedin said iigure. The form of the skelp is also represented in Fig. 9. y

On the opposite side of the tongue g there is an. annular groove, h, which terminates with the inside of the contiguous fiange c. This groove is formed of sufficient depth to receive the un'bent portion of the skelp, a'srepresented.

The' mandrels N are grooved out :sit-7', to admit. of the passage ofthe tongues g of the rolls L'. After the slielps pass through the second pair of rolls j ust described, they are caught by the rolls 0 and O', the peripheries of which and their action ou the skelps are shown in l detail in Fig. G.

The'rolls O' arc provided with ianges e, the

I' saine as the rolls L', as represented in the drawing, for guiding the skelp. The mandrels l? are ofthe full circular form of the ordinary mandrcls.

In the drawing I have represented the shaftsl G G of the feed-rolls F F, the shaft H carrying the milled heads J J' J', the shafts I I' carrying the bending-rolls K K' 5 and the intermediate shafts, (2, are geared together by means of wheels It. i

The gearing is continued with the shafts 2 2' 3 3! by means of wheels It on said shafts and the intermediatepinions, S. The several shafts maybe connected together, however, in.'2b any convenient manner, and the power applied to either shaft in the train.

Theoperation is as follows: The front end of the sheet is placed in the mouth D, and the sheet is pushed forward until caught by the feed-rolls F F, which pass it to the bendingro-lls, the milled-head cutters slitting and beveling the skelps. Then the first pair of rolls bends the skclp in the manner and form represented in Figsi and 9. As the skelp is caught by' the second pair of rolls, L L', it is brought into the form represented in Figs. 5

and 10. The third pair of rolls finishes the bending opel'tioll, bl'illring the skelp into the form represented in Figs. 6 and l1. The tlanges e of the rolls L' 0', by overlapping the rolls L O, guide the skelp after it passes Athe Iirst pair ofbendingrol1s,K, and thus dispense with the necessity ot' separate guiding devfics. l

If the tube is a butt-joint, the skelpis brought into the perfect circular form represented in with the curve f, tongue g, and groove h, and

the combination thereof with 'the roll L, as described.

4; Jointly, the construction of the roll L' with the curve j, tongue (1, roove h., and flanges c, and the combination thereof with the roll L, as described. f

5. The combination ofthe rolls L L'wvith the rolls K K by means of suitable gearing, as and for the purpose set forth.

A6. The combination ot' the rolls 0 0' with the rolls L L', for finishing the bending operation, substantially in the manner described.

-7. The combination aml'arrangement of the three pairs of rolls K K', L L',"and 0 0', for bending a fiat skelp into the form represented in Figs. i), l0, and 11, as above set forth.

8. The combination of the guiding-mouth D andugnides D D', the feed-rolls F F, and the milled-head cutters J J' J', with the three pairs of bending-rolls, substantially in the manner and for the purpose above described.

In testimonyJthat the above is my invention I have hereunto. set my hand and affixed my seal this 30th day of August, 1870.

srnrnnn r. u. msnen. p.. s]

Witnesses THOMAS J.BEWLEY, v STEPHEN Us'rrcic. 

